Incubator.



'PATENTED JAN. 29,1908.

F. T. PORTER.

INGUBATOR. APPLICATION FILED SEPT. 19. 1906.

Uhli ifitll inc'olea'ron.

. Specification of Letters Patent.

Patented Jen.

Application filed September 19. 1906. Serial lilo. 335,318-

TO all whom it may concern:

I Be it known that 1, Far T. Posrrin, a citizen of United States, residing at MorristoWn, in the county of Shelby and State of Indiana, have invented certain new and useful improvements in incubators, of which the ioilovvingis a specification.

This invention'relatos to new and useful iinprovenicnts'in incubators. I The-invention aims primarily to provide an incubator in which the temperature is evenly distributed and is constant throughout the period of use.

The invention further aims to provide -po'ses 111 such manner that temperature variations and direct contact with-the eggs will be prevented.

The above and further objects will appear as the description of the detailed construction proceeds, reference being had tothe accompanying drawings forming a part of this specification, like numerals designating like parts throughout the several views, wherein,

Figure 1 is a longitudinal section of an incubator constructed in accordance with my invention. Fig. 2 is a plan view of the Wa or tank in which the heating agent circulates, and Fig. 3 is a central transverse section thereof.

In the practical embodiment of my invention I employ a box or receptacle 1 supported on legs or corners posts 2. A tray 3 o; reticulated material divides the receptacle linto an egg chamber a and a lower portion for the reception of a nursery draw 5. The tray 3 is so ported any desirable manner as upon a he go 6 and drops to a centralpoint so as to possess a substantial dishshape. Disposed in the upper part of the box 1 is a cir culating tank Twhichjtamprises in its pre ferred embodiment a square tube of rectanular out lines supported from the top of the OK 1 by suitable hangers 8. A drain pipe 9 leads at an incline ironi the forward portion tcry 22 and has connection with a of the tank 7, the other or being bent at an angle cating with the lower nor i said pipe 9 and communi of a reservoir 11 from the upper portion of which a supply 12 leads to the tank 7. A resilient shelf 13 is secured to the bottom. of the box 1 and is braced by asuitably disposed rctractile coil spring 14 having its ends secin'cd' in, eye screws 15. Mounted upon the shelf 13 is a lamp 16 provided with fiue 17 which projects through. the reservoir 11.

The heat from the line 17 is directed against a guard 18 carrier. by thermostat lever arm 19 mounted upon a suitable support 20. 1 The arm 19 has conn action with anelectric Wire 21 leading iron' a battery 22. An alarm bell is interposed within the Wire 21. A Wire 24 also leads from the bit from which depends in superposed relation contacts 28 with which the arm Qongages in making a circuit. it Will course be understood that the arm 19 moves toward the respective "contact 26 in accort ancc with its respective movements under expansion and contraction due to. temperature variations. ,1

Means are provided for co trolling the passage of heated air throu h the flue 1'7. in ac cordance with the actio the arm 19 As shown in Fig. 1 a branch flue 37 leads-from the fine 17 to the atmosphere at a noint bolow the tank 11. Adjacent to said branch flue a pivoted darn or or flap valve 38-is' provided which at its res and has connection in any suitable manner with a chain 39 provided. upon the end of the arm 19. When the heat becomes excessive and the arm 19, rises the valve 38 is raised until it engages the stop 40. ln-this position said valve closes communication through the flue 17 and per- Inits of the heated air cgressing through the branch flue 37. When the arm 19 descends under the contractive influence of a lower tom ,erature thavalvc 38 raviiates to a.

serves to permit of an uninterrupted circulation of heated ,air within the incubator and in this connection co-acts -with a tributing slate 27 carried by rods 28 depending from the top of the box 1. \The plate 527 is preferably provid d with aperturestact of the heated airjwithih diminishing in diameter as they approach a central point; from the sides. Fresh air is supplied to the egg chamber 4 by means of suitably constructed air conductors extending along three sides ofthe chamber 4.

The conductors 30 'are'constituted of a plu-.

rality of independent pipes of suitable material provided in the back portions thereof with apertures 31 whichco'mmunicate .with

a fresh 'air opening 32"formed in the rear.

wall of the box 1. shown the pipes 30 arecast'or molded in an integral section and terminate short'of the front wall of the box 1 so as to discharge fresh heated air currents in parallelism to'the sides of the chamber 4. This arrangement prevents ah. abrupt cone eggs, but

. assures of its gradual dissipation throughout the entire chamberly It will, of course .be understood that any/suitable I'opening 45,

constituting an outlet for the air within the incubator may b'e'p'rovided in the walls thereof to co-act' with the conductors 30 in plate 27, that is all gradually decreasing" diameter towards acentral 'oint serves to efiect an even distribution 0 air by permitting" greater. currents "of circulation through the plate adjacent its "edges and thereby equalizes the circulation throughout the in- .terior dirtire'box 1. I

the egg tray 3 is of dish shape it will be.

Owing to the fact that readilyapparent that the eggs may be more easily turned? While the elements hereinshhwn and described are well adapted to serve the functions set forth, it is obvious that various minor changes may be made in the propontions, shape and arrangement of the several parts without departing from the spirit and scope of the invention as defined in the ap.

pended claims.

Having fully described my invent on I claim:

1. In an incubator,-a receptacle, an apertured plate supported. transversely thereof and dividin said receptacle into aheating chamber an an egg chamber, and a heating agent located in said'heating chamber, said ,plate having its. apertures severally and gradually decreasing indiameter as they I approach a determinateon'e ofjsaid apertures as and for the purpose set'iforth, r

2. In aninoubator, 'a'receptacle', an apertured plate? supported transversely thereofand dividin sa 1d receptacle into a heating .chaniber an an' egg chamber, and a heating agent "in 1 said heating .cha'rnber, said: plate havjmg its apertures severally and gradually decreasing in diameter in successive order 'to'a 'oint central thereof.

3; ii an incubator, a receptacle having a heating chamber and an egg chamber, means for" efiecting an even distribution of heat to said egg chamber, said receptacle having an openin in its walls, and means-for effecting a circu ationof within said receptacle comprising conductors arranged ill-parallelism to-one another'and closely associated with the-side walls of said receptacle in parallel relationthereto as a series, said conductors severally communicating at one end exteriorly of said receptacle and at their other end interiorly there'dfand being ada ted to discharge the currents of air circulate thereside walls of said receptacle. 3' In testimony whereof I afiix my signature in presence of two witnesses.

FAY T. PORTER.- Witnesses; i

AI CLARK, 'WILSQN T. HANDY.

-- through in initial parallelism to the adjacent 

